EP 4227350 A1 20230816 - WATER-SOLUBLE FILM, PRODUCTION METHOD, AND PACKAGE
Title (en)
WATER-SOLUBLE FILM, PRODUCTION METHOD, AND PACKAGE
Title (de)
WASSERLÖSLICHER FILM, HERSTELLUNGSVERFAHREN UND VERPACKUNG
Title (fr)
FILM HYDROSOLUBLE, PROCÉDÉ DE PRODUCTION ET EMBALLAGE
Publication
Application
Priority
- JP 2021163139 A 20211001
- JP 2022036859 W 20220930
Abstract (en)
A water-soluble film that maintains excellent water solubility and does not cause occurrence of appearance defects over time during long-term storage at a high temperature even when a chemical agent such as a laundry detergent is packaged, a method for manufacturing the water-soluble film, and a package in which a chemical agent is packaged using the water-soluble film are provided.A water-soluble film comprising polyvinyl alcohol having a polymerization degree of 100 to 3,000 and a polyhydric alcohol plasticizer in an amount of 1 to 50 parts by mass with respect to 100 parts by mass of the polyvinyl alcohol, wherein in a case where the water-soluble film is used for a package in which a model detergent is packaged, a weight reduction rate of the package is 1.0 to 6.0 g/(m<sup>2</sup>·day), when the water-soluble film is immersed in the model detergent for 24 hours and then a tensile test is performed, an elastic modulus of the water-soluble film when the water-soluble film is stretched to 100% is 9 to 35 MPa, and when the water-soluble film is immersed in the model detergent for 24 hours and then the water-soluble film is immersed in deionized water at 5°C, a complete dissolution time is within 100 seconds.
IPC 8 full level
C08J 5/18 (2006.01); B65D 65/46 (2006.01)
CPC (source: EP US)
C08J 5/18 (2013.01 - EP US); C08K 5/053 (2013.01 - US); C11D 1/83 (2013.01 - EP); C11D 17/042 (2013.01 - EP); C11D 17/043 (2013.01 - EP); B65D 65/46 (2013.01 - EP); C08F 16/06 (2013.01 - US); C08J 2300/14 (2013.01 - US); C08J 2329/04 (2013.01 - EP US); C11D 1/22 (2013.01 - EP); C11D 1/72 (2013.01 - EP); C11D 3/2041 (2013.01 - EP); C11D 17/00 (2013.01 - US)
C-Set (source: US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4227350 A1 20230816; EP 4227350 A4 20240626; CN 116438121 A 20230714; CN 116438121 B 20231110; JP 7314438 B1 20230725; JP WO2023054720 A1 20230406; US 11939441 B2 20240326; US 2023323046 A1 20231012; WO 2023054720 A1 20230406
DOCDB simple family (application)
EP 22876582 A 20220930; CN 202280007177 A 20220930; JP 2022036859 W 20220930; JP 2023532635 A 20220930; US 202218036639 A 20220930